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After an experimental study of refrigerants HFC-134a, HCFC-123, HFC- 404A and HFC-407C, and considerable modifications to the test stand, LENI has undertaken a new experimental program and has assembled a large new database for evaporation of ammonia and t ...
Nowadays, most of the natural gas conversion systems available on the market for bifuel vehicles are based on the venturi principle or on the continuous injection principle for the carburation of the engine. Even if the driveability of these systems is sat ...
The Swiss limit for NOx exhaust gas emissions from decentralised electrical power and heat cogeneration units using stationary I.C. engines operating on natural gas, despite a recent increase from 80 to 250 mg/mN3 (5% O2), remains the most severe in force ...
Details of the reliability and availability aspects of the thermoeconomic methodology presented in Part I (Olsommer et al., 1999) are given here in Part II of our series of two articles. These system details cannot be forgotten, particularly if the superco ...
Les profondeurs de la terre recèlent d’énormes quantités de chaleur naturelle, dont l’origine provient essentiellement de la désintégration d’éléments radioactifs. Selon les connaissances actuelles, les températures culminent à 6000°C dans le noyeau et att ...
The increasing concern for the environmental impact of human activities stimulates the development of new methods for the analysis and design of industrial processes. It is generally admitted that the considerations of environmental and other life cycle fa ...
Although heat pump based district heating is often an obvious solution, adapting the delivery temperature to the most exigent users is detrimental to overall system performance. This pitfall can be avoided with a centralized plant of heat pumps, cogenerati ...
Although heat pump based district heating is often an obvious solution, adapting the delivery temperature to the most exigent users is detrimental to overall system performance. This pitfall can be avoided with a centralized plant of heat pumps, cogenerati ...
A multicriteria decision support system has been developed to evaluate alternatives for sustainable and integrated energy centres for rural development in the Mediterranean area. The search for the most suitable solution for a fixed site is a complex probl ...
The transition towards sustainable development inevitably implies a multiplication of the factors to be considered. The problem is particulary evident in the domain of energy systems for which methods allowing a holistic comparison between technologies opt ...
